Tractor-engine.



TRACIOR ENGINE. y A PPLsc/nwn man Nov. z5, 19u21.

. ffp'atented Nov.. 30, 1915 l SHEETS-SHEET l.

ma/vir.

trl-merv. BUoKwAnriiR, F ALrooNa, 'Pian'lvsvnvalxr'm.A

Specification of Letters Patent. Patented Nouv, 30, .1915

Application lediNovember 25, 1912. Serial No. 733,283.

yTo all whom z't may concern lBe it known that I, TRACY V. BUoKwnL- TER, a citizen of the United States, residing.

at Altoona, in the county of Blair and State of Pennsylvania, have invented certain 1mprovements in Tractor-Engines, of which the -f 1lowing isa specification.

.My invention 'relates to tractor engines such as are propelled by electric power, and its leading purposesare to conserve power, particularly the energy. of storage batterles, by preventing the regulation of the speed by the application of the brakes when the power is onytorconduceM to safety by automaticall throwing ofi" the power by the applicatlon of the brakes, and to simplify the operations by the reduction of the numbe of. movements required therefor.

In the practice of the invention, the controller and the brakes are connected so that the operation which applies .the brakes whether by air or hand, throws the controller to the neutral or ofi position, and `the current cannot be applied when the brakes are on or until they are released.

. W-hile the present application of my invention is to` use in and -for the improvement of tractor engines, it will be understood thatit is also applicable to, and intended for use with, motor trucks and other power propelled and brake controlled' machines.

In the accompanyingdrawings, Figure 1' is a -partly sectional. plan view -of tractor engine having my nnprovements applled thereto, Fig. 2,is a sectional view on the line 2'2 of Fig. 1, Fig. 3 is a sectional view on the line 3-3of Fig. 1, F-ig. 4 isa sec- Vtional view on 'the line'4-f of Fig. 1 in illustration of the'connections. between the controller and braking mechanisms with the vcurrent ofil and the brakes on,`and Fig. 5 is aliew' of the construction 'shown in Fig. 4

vwith 'the current on and the brakes off.

Thev mechanism illustrated in the drawings comprises a tractor engine having the frame 1 with the axles 2 connected to the traction wheels 3 by the usual knuckles 4. The wheels have the brake 'drums 5 fixed thereto and the brake bands or shoes 6, are

connected therewith so that they move togethe'r about theaxes of the knuckles. The.

ends of the bands turn on --thesemi-cylindrical.: blocks 7 which are spread to apply the brakes by turning the revoluble shafts 8 having the flattened ends 9` between the blocks. The shafts 8 are provided with transversely extending arms 10' which are Y connected by links 1l with the ends of the levers V12 and"12, each lever operating the brakes for -a pair of wheels at an lend of the machine and being operated by the respective draw rods 13 and 14. The rod 13 is pivotally connected to the middle of a float ing lever 15y having one -end`thereof pivotally'connected to the piston rod 16, operated by airA in the cylinder 17, and-tithe other end pivotally connected tothe rod 1x8. The `rod 14 is pivotally connected to the middle of a. floating lever 19 which has one end pivotally connected with the rod V18 and the other end connected by the link 20 with the middle of a lever 21, the latter having one end pivotally connected to the 'frame 1 and the other end pivotally connected tothe rod through the bearing 24: on the frame 1, is

fixed to the yoke 2 5 to. which are connected the ends of a sprocket chain 26 that passes over a sprocket wheel 27 fixed on` a shaft 28.

The ends of the chain 26 `are connected bv The rod 23, movable longitudinally..

the respectivefsprings 29 and 30 with the A frame, the springs acting to keepthe chain taut and hold it in or bring it to the normal position shown in Fig. 4. p

The shaft 2S, having its endsl journaled in the bearings 33,- has fixed on one end thereof a. beveled gear 34 which meshesfwith athrough the wheel 16, can operate the con troller by` operating either lever-41 or 4l .anchors 31 and 32 which -are fixedtothe from either side of the wheel f6 on either side of the platform. Ifl the lever 41 be rocked it w l act through the Gears 39 and 3.8 to throw the current on or ofi', depending on'the direction of its movement. and the consequent movement of the shaft' 36 will b e transmitted through the gears 35 and 31 to rotate the shaft 2S; and` iftlie lever ll be rocked it will act throughthe' gears -13 and -12 to rotatethe shaft 28 with 1L' g-Q'i' the gear S- t 'thereon which acts through the gear to operate thecontroller and' throw current on or oil?, depending upon the vdnfection of the movement. rEhe rerofl'rin'g 5 shaft 28 acts through the sprocket Wheel onthe. chain 6 andy causes the same to dra W the rodQf when such, Wheel 4is turnedf in either direction from the neutral position shown in Fig, at to affect either the forward or the reverse motion of the engine.

lllhen air is admittedto the cylinder 1T to apply the brakes, thev rod vthe parts 15, 18, 19,20 and Q1 on the parts 23 and 26 ,tomove them from the position shown in F 5 in which the current is on, to the positionishonn in Fig. ll, inwhich the current is off, due to the. rerolution of the Wheel 2 bv the chain '26m the operation of restoring the latter to the neutral position.

u liihen the mechanism has been moved to the in Fig. 4e, the lever 21 is held position shown stationary and thel force` communicated froi .15, ;and 13 uponthelbeam l2 and lthe parts 16, 15, 18, 19, and 14 upon the beam 12F, Wherebythe beams-1Q and 12 are dra Wn *toward .eachother and .act through the respective parts 1l, 8 and 4The lever 15 has its end, which is connected tothe rod 1G, .also connected to the rodo. which is in turn connected to a shaft ed" through a chain il? adapted to be Wound thereon; This shaft has xed thereon the sprocket Wheel 48 which is connected by a link bet or sprocket chain 49 with a revolu- '-le sprocket Wheel 50 carried by a shaft 51, the Wheel beingturned by a hand `Wheel 52. rlie Wheel 52 can'be turned and caused act 'through Wheel 50,'cbain 9, Wheel 48,

"shaft d6', chain 4'? and'link to operate the lever-15 and apply the brakes inde-i pendently of the air, the controller mechanism being' thronin to' the simultaneously scribed. l

Having describedi'ny intention, l claim: L The combination of the brakingmechanism, .the controlling' mechanism, means comtherewith as previously oeprising a revoluble shaft adapted to operate be operated Aby the controlling mechanism7 and means comprising a sprocket Wheel and chain whereby said baking mechanism can turn said shaft' and said shafhcan shift said braking mechanismV I The combination of traction Wheels With friction'al; brakes, brake operating means comprisingv a reciprocating rod, a rotary shaft, .means connecting said shaft and rod wherebyeach can operate the other,po\ver controlling'mechanism, and means connectinglsaid mechanism with said shaft Whereby thooperationyof applying saidV brakes first operates saidy mechanism to cut olf the power." i

3. The combination of a. mnh-num mic-011C# and shaft.

1G acts through I throught-he parts 1G,- through 9 to apply' the brakes.v

ott position shaft on which Y and resilient mechanism acting' through' said amines for n'ianuall)v turning; said controller, a shaft, means for connecting said controller so that each is adapted for operating `the other. braking mechanism, iuid pressure mechanism for applying` said braking mechanism. and means connecting said shaft and said ln'akingg` mechanism whereby Vthe operation of said iluid pressure mechamsm. yin applying first mores said tion. 4

ill' rThe combination f-f a controller, vmeans for manually,operatinesaid controller, a shaft, means connecting said shaft and con `troller so that the operation of either will said braking` mechanism controller to the ofi posi- .operate the other, separate means for manually operatimgl said shaft, and braking mechanism connected with said shaft so that the opera-tion vthereof to appl)7 the brakes first operates the controller to, throw oft the power. v .I

5; Thecombination of a controller shaft, aears fixed to said shaft, manuali)7 operated means,comprising?r a `fear meshing with one of said gea rs first named whereby said shaft can be turned, a second shaft, a gear fixed on said second shaft and engaging. the other of said Lgears first named wherebyT said shafts are ycaused to reYolVe together, i brakingf mechanism and means for connecting said sec nd shaft and braking,- mechanism in inter-dependent relation.

6, rliecombination of a controller shaft, mep-ns for manually turningsaid shaft, a second shaft, means for connecting said shafts so that each is adapted for turning .the other. brakiner mechanism. means for 7.151 machine .having traction Wheels,

4,braking means for said wheels, a reciprocating rod adapted for shifting` said braking1 n'ieans. a revolublc shaft, a sprocket- Wheel fixed to said shaft, a sprocket chain on said sprockct `Wheel with ends hired to said rod,- controller mechanismr 'connected with and adapted to vbe operated by said shaft, Vand means for automaticallyreturning said-controller mechanismto the neutral position.

B. A ymachineharing traction Wheels, brakingl means for said Wheels, a. reciprocating rod, a sprocket chain having' two points of connection with saidA rod, a sprocket wheel engagedl by said chain, a revoluble Said sprocket Wheel is lined,

chain tomore the same to aneutral position.

9. A lmachine having traction Wheels, braking means for.,saicl-wlieels,' a reciprocating rod, a sprocket chain having two points of connection with said rod, asprocketwheel engaged by saidohaim arevfolubqle shafton .merece mechanism, means for connecting said shaft and controller mechanism and resilient means actingon lsaid chain to effect the restoration of said controller mechanisnito the neutral position. Y

10. T he combination of power controlling mechanism, lirakingmeehanism, mechanism comprising floating levers connected lwith said power controlling and braking mecha? nisms, vand means for limiting the movement of a lever of said lever mechanism to provide a.. uicrm for the application o power 'to said. braking mechamsm.

In testimony whereof have hereunto set 'my name this' 16th day oil iscwemlier 1912, in the presence of the subscribing wie, messes.- y

TRACY Y. BUCKXVLTER. 1Jliiinesses Griso. A. CUNmiY,

Jos. Gr. DENNY, Jiu 

